telecast vs television

telecast and television both are nouns.

Word	Noun	Adjective	Verb	Adverb
telecast	Yes	No	Yes	No
television	Yes	No	No	No

telecast (noun)	television (noun)
a television broadcast	a telecommunication system that transmits images of objects (stationary or moving) between distant points
	an electronic device that receives television signals and displays them on a screen
	broadcasting visual images of stationary or moving objects

telecast (verb)	television (verb)
broadcast via television